1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2004 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; if not, write to the Free Software 17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 18 19 */ 20 21 #include <stdio.h> 22 #include <string.h> 23 #include <signal.h> 24 #include <sys/time.h> 25 26 static volatile int done; 27 28 #ifdef SA_SIGINFO 29 static void /* HANDLER */ 30 handler (int sig, siginfo_t *info, void *context) 31 { 32 done = 1; 33 } /* handler */ 34 #else 35 static void 36 handler (int sig) 37 { 38 done = 1; 39 } /* handler */ 40 #endif 41 42 main () 43 { 44 /* Set up the signal handler. */ 45 { 46 struct sigaction action; 47 memset (&action, 0, sizeof (action)); 48 #ifdef SA_SIGINFO 49 action.sa_sigaction = handler; 50 action.sa_flags |= SA_SIGINFO; 51 #else 52 action.sa_handler = handler; 53 #endif 54 sigaction (SIGVTALRM, &action, NULL); 55 } 56 57 /* Set up a one-off timer. A timer, rather than SIGSEGV, is used as 58 after a timer handler finishes the interrupted code can safely 59 resume. */ 60 { 61 struct itimerval itime; 62 memset (&itime, 0, sizeof (itime)); 63 itime.it_value.tv_usec = 250 * 1000; 64 setitimer (ITIMER_VIRTUAL, &itime, NULL); 65 } 66 /* Wait. */ 67 while (!done); 68 return 0; 69 } /* main */ 70